"Search" unfortunately reveals all "hidden" pages, all hidden data

Hello,
No news from coda on this issue. I don’t know what this means.
Just for the record I’ve just found what could be the announcement in 2019 of the hidden-that-do-not-hide feature.
At least it is clearly stated that hidding was not intendend as a security feature. People were already asking for better permission model. 5 years later. Just the same. Not a single word from coda. Strange.